GData Integration in iphone

Step 1

The first step, is to head on over to the Google Code website for the Objective-C Client, download and extract the zip file source code. Alternatively, you can get the latest and greatest version via Subversion using:

svn checkout http://gdata-objectivec-client.googlecode.com/svn/trunk/ gdata-objectivec-client-read-only

If you downloaded the zip file from the website, you’ll have version 1.7.0, and if you used the svn code you’ll have a -read-only folder.

Step 2

Open up the GData XCode Project from your downloaded folder as well as your iPhone App XCode project.

Step 3

Drag over the GData Sources Folder from the GData project to your iPhone App project and add it as reference [don't check the box for Copy items into destination group's folder (if needed).] You do not need to copy over all the files into your project. You can, but it’s not required.

Step 4

Open up the build settings for your iPhone App project. Located and set the following settings. * Header Search Paths: /usr/include/libxml2 ../gdata-objectivec-client-1.9.1/Source * Other Linker Flags: -lxml2, -ObjC

For the Debug build configuration only, add the Other C Flags setting so that the library’s debug-only code is included:

Other C Flags: -DDEBUG=1

Step 5

Now be sure that the downloaded source code is in the same directory in which your actual Code Folder is.

Step 6 Make sure I've the frameworks "SystemConfiguration.FrameWork" and "Security.FrameWork" added to your project.

.These are the steps for GData integration

Check dis Link 4 more help ;-
http://hoishing.wordpress.com/2011/08/23/gdata-objective-c-client-setup-in-xcode-4/